コンクリートの破壊強度, ひずみ能力, 弾性率と破壊時間との関係

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  • 畑野 正
    電力中央研究所技術研究所, 構造研究室

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タイトル別名
  • RELATIONS BETWEEN STRENGTH OF FAILURE, STRAIN ABILITY, ELASTIC MODULUS AND FAILURE TIME OF CONCRETE
  • コンクリート ノ ハカイ キョウド , ヒズミ ノウリョク , ダンセイリツ ト ハカイ ジカン ト ノ カンケイ

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The writer made attempts to make unified expressions of strength of failure, strain ability and elastic modulus for the case of the dynamical and statical compression test of concrete with respect to the identical kinds of specimens, enlarging the failure time range to 102 against 1. As a result, it was found that (1) so far as the strength of failure is concerned, a better accuracy can be given by expressing the existence of linear relation between the reciprocal of the strength of failure and the logarithmic value of the failure time, (2) the compressibility, i.e. the compressive strain under the strength of failure is permitted to be constant within the aforementioned time range, (3) consequently the treatment becomes convenient by admitting the existence of linear relation between the reciprocal of the elastic modulus and the logarithmic value of the failure time.<BR>Also the writer added the explanation that the expression admitting the linear relation existing between the reciprocal of the strength of failure and the logarithmic value of the failure time was found interesting to be consistent with the theoretical formula derived from the “Theory of molecular reaction rate” as to the subject of fracture of glass by N.W. Taylor.

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